Display screen or portion thereof with computer generated icon



FIG. 1 is a front view showing a first image in a sequence of a display screen or portion thereof with computer generated icon; and,

FIG. 2 is a front view of a second image thereof.

The appearance of the transitional image sequentially transitions between the images shown in FIG. 1-2. The process or period in which one image transitions to another image forms no part of the claimed design.

The dotted broken line showing of a computer generated icon is included for the purpose of illustrating portions of the article, and forms no part of the claimed design. 

CLAIM I claim the ornamental design for a display screen or portion thereof with computer generated icon, as shown and described. 